Cascade 300 Internal Aquarium Filter with Spray Bar

Description is below picture.
Cascade 300 Internal Filter. The New & Improved Cascade Internal Filter with Spray Bar is designed for better filtration and aeration above and below the surface! SPRAY BAR distributes water evenly over water's surface to aid in aeration. Crystal Clear Water for Fresh and Marine Aquariums, and great for Terrariums too! Easy to use Replacement cartridges.